On Wed, Jun 12, 2013 at 5:38 AM, Andrei Alexandrescu <SeeWebsiteForEmail@erdani.org> wrote:

On 6/12/13 5:38 AM, Timothee Cour wrote:

However I've implemented something that works exactly as required:

https://github.com/timotheecour/dtools/blob/master/dtools/util/variant_nested.d

auto
d=variantTupleNamed("a",1,"b","foo","c",variantTuple(1,2.2,"three"));

Do calls to variantTupleNamed nest within one another? This seems interesting. We should integrate this with json I/O as well.

Andrei

Yes, the base type Variant2 nests recursively.

I've added this to the unittest:

Variant2 a1=0;

a1=variantTuple(1,"a");

a1[0]=variantTuple("foo",1.1);

auto a2=variantTuple(3,[1]);

a1[1]=a2;

a1~="foo2";

assert(a1.text==`[[foo, 1.1], [3, [1]], foo2]`);

(variantTupleNamed is just a way to construct a named tuple, but works as variantTuple)

Further, see my comment "read-modify-write works": I would think this could be applied to std.variant.Variant too.